Hirai Tarou

Lucifer, an angel who likes fighting and hates losing, spends his day fighting. during his battle with the demon Satan, he was suddenly betrayed by his companions, and he fell into the present age where demons and humans coexist hundreds of years later. Lucifer, who has lost everything including his powers, evolves and is able to copy the abilities of his defeated enemies. Realising this, Lucifer sets out on a journey to seek out more powerful foes.

Even if this love, this tenderness will bring about the destruction of the world… "Because… I met you." Mashiro Ouha was a normal high school student… until the day she got attacked by snake-like creatures. Oblivious to her destiny, she had always believed that her life would be an ordinary one…